Random nonlinear layered structures as sources of photon pairs for quantum-information processing

Details Random nonlinear layered structures as sources of photon pairs for quantum-information processing Random nonlinear layered structures as sources of photon pairs for quantum-information processing

2009-07-24

arxiv.org/abs/0907.4338v1

J. Russ. Laser Res. 30 (2009) 508-513

Physics

Quantum Physics

4 pages, 5 figures

Scientific paper

Random nonlinear layered structures have been found to be a useful source of photon pairs with perfectly indistinguishable un-entangled photons emitted into a very narrow spectral range. Localization of the interacting optical fields typical for random structures gives relatively high photon-pair fluxes. Superposing photon-pair emission quantum paths at different emission angles, several kinds of two-photon states (including states with coincident frequencies) useful in quantum-information processing can easily be generated.

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